HARDMCQ SINGLENEET ChemistryPhysical ChemistryIonic equilibriumAchiever Section
Assertion: When aqueous, solution of CH₃COONH₄ is diluted, then its degree of hydrolysis increases. Reason: Ammonium acetate is the salt of weak acid and weak base; its degree of hydrolysis does not depend on the concentration.
A.A
B.B
C.C
D.D✓ Correct
Explanation
3 4 3 4 CH COONH CH COO NH → Both will undergo hydrolysis 3 4 2 3 4 CH COO NH H O CH COOH NH OH w h a b K K K K x 3 4 2 3 4 Thus, CH COO NH H O CH COOH NH OH initial C C At equi. C Ch C Ch Ch Ch Where h → degree of hydrolysis 2 2 h 2 2 2 h h C h K C 1 h 2h h K 1 h h K 1 h Thus, degree of hydrolysis is independent of concentration of salt. Since, the degree of hydrolysis does not depend on the concentration of the salt, dilution of the solution will not affect the degree of hydrolysis. S
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